Module os::task::processor

Implementation of Processor and Intersection of control flow

Here, the continuous operation of user apps in CPU is maintained, the current running state of CPU is recorded, and the replacement and transfer of control flow of different applications are executed.

Structs

• PROCESSOR
• Processor
  Processor management structure

Functions

• current_kstack_top
  get the top addr of kernel stack
• current_process
  get current process
• current_task
  Get a copy of the current task
• current_trap_cx
  Get the mutable reference to trap context of current task
• current_trap_cx_user_va
  get the user virtual address of trap context
• current_user_token
  Get the current user token(addr of page table)
• run_tasks
  The main part of process execution and scheduling Loop fetch_task to get the process that needs to run, and switch the process through __switch
• schedule
  Return to idle control flow for new scheduling
• take_current_task
  Get current task through take, leaving a None in its place